While In OKC last week with DH, (His business trip & my fun trip) I had an ah-ha moment while sewing on my little Brother. DH bought me this machine for this trip. It doesn't have a 1/4" foot.
First I measured 1/4" from the needle & used several layers of painters tape as a guide. (Like I did for my vintage machines.)
As I sewed I kept my finger on the edge fo the "guide" & my fabric to keep it in line.